Combined shooting and magazine barrel for spring air guns



Patented sept. 29, 1931 l L UNITED. STATES PATENT OFFICE j CI'IABIES F.LEFEVER, OF PLYMOUTH, MICHIGAN, ASSIGNOR T0 DAISY MANUFACTUR- INGCOMPANY, OF PLYMOUTH, MICHIGAN, A CORPORATION OF MICHIGAN COMBINED'SHOOTING AND MAGAZINE BARREL FOR SPRING AIR, GUNS 'Application filedMarch 5,

The invention relates to combined shooting and magazine 'barrels' forspring air guns of that type in which the two barrels are formed from anintegral sheet metal blank bent about two parallel axes with a linertube inserted within the shooting barrel. In such constructions it isusual to attach to one end of this integral blank a screw rthreaded plugconcentric with the axes of the shooting barrel and which is engageablewith a spring abutment of the gun, while at theopposite end of the blankis attached a cap for closing the muzzle end of the false barrel of thegun.' The liner lia tube for the shooting barrelis providedwith anaperture in the side wallthereof which must register with the dischargeend of the magazine barrel so as to permit the passage of shot from themagazine into the shooting aa barrel. It is, however, necessary in theasselnbling of the parts to use great care in securing properregistration, as otherwise the magazine would fail to function, It isfurther necessary to provide deflecting z' means for directing the shotin the maga zine through the aperture inthe liner tube, further to Vpeenover the ends of the liner tube so as to hold the same from displacementand to make provision for the inser- Lotion of shot into the Vmagazinebarrel during loading.

My improvement provides a simplified construction for accomplishingthese results and facilitates assembling of the parts, and to this endthe invention consists in the construction as hereinafter set forth.

In the drawings: Figure 1 is an enlarged sectional elevation of thecombined shooting and magazine i@ barrel;

Figure 2 isa cross section on line 2-2 of Figure l;

Figure 3 is a cross section on line 3-3 of Figure l;

Figure 4 is a similar View of Figure l showing a modified construction.

As illustrated, A is the screw threaded plug for engagement with the4spring abutment of a gun and B is the cap member for engaging themuzzle end of the false 1929. Serial No. 344,428.

barrel, C is a sheet metal blank which is bent to form cylindricalsegments about two parallel axes, one for the shooting barr rel and theother for the magazine barrel As shown in Figure 2 the blank C is acrosssectional form of an elongated loop having the cylindrical segmentCv for the firing barrel and the cylindrical segment C2 for the magazinebarrel. The portion C is extended at the ends beyond the portion C2 forengagement with the plug A and cap B as indicated at C3 and C4. The'portion C2 is bevelled at its inner end to engage a conical recessV A inthe forward end of the plug A and the anchoring surface of this cone isused as a closure for the end of the magazine barrel and a deflector fordirecting the shot therefrom into the firing barrel.

To complete the firing barrel a seamless liner tube D is insertedtherein to extend from end to end. This tube may be made 0f light gaugemetal asrit is reinforced and supported by the surrounding segment C',while the oblong cross section of the member E forms a truss for addingadditional stiffness. It is, however, necessary to secure the liner tubeD in position to provide it with an aperture for communication with theend of the magazine barrel and to insure that this aperture is in properregistration when the parts are assembled. Heretofore, the method ofsecuring the liner tube has been the peening over of the ends thereof onthe plug A and cap B, but if this is done where the feed aperture is outof registration it is practically impossible to make correction.Furthermore, it frequently happens in commercial manufacture that abarrel is found to be untrue and where the liner is permanently attachedto the surrounding blank, the whole structure must be scrapped. I havetherefore devised a construction in which the liner tube is adjustablyand attachably secured in position to permit either correction of anerror or replacement where found untrue, the construction being asfollows:

The tube D has cut therein the feed openving D which is of a suflicientsize toy permit thev passage of shot from the magazine barrel Cil CII

into said tube. Through the wall of the plug A there is formed a screwthreaded aperture for receiving a set screw E, the inner end of whichwill engage with the liner tube D and clamp it from movement. 'Ihusduring assembly after the insertion of the tube D the aperture D thereofis registered with the inner end of the magazine barrel after which theset screw E is tightened to secure the parts in this position. If,however, the alignment is not perfect, adjustment can be easily made andin case the barrel D is found to be untrue it may be quickly removed andreplaced by another.

For introducing the shot into the magazine barrel an aperture throughthe side wall thereof is required. I have formed this aperture andfurther provided O'uide for directing the shot therethrough, as shown inFigures l and 3 in which F is a struck out portion of the. blank Cforming a conical guide adjacent to the aperture G through which theshot is inserted. The blank C centers between the portion C C2 thereof,and is preferably slightly depressed to form a shallow groove or channeland this also assist in guiding' the shot through the barrel.

The magazine is provided with the usual follower H which is under thetension of a spring I for forcing it in a rearward direction todischarge the shot. During the loading of the magazine this follower isdrawn forward beyond the entrance aperture G and is anchored against thetension of the spring by engagement with a notch as indicated by dottedlines at J.

As a modified means of holding the liner tube D in position, I form theinner end thereof with a shoulder D2 and thread the outer end thereof asindicated at D3 to engage a clamping nut Dt adjacent to the cap memberB. rihis construction also permits of either adjusting or detaching theliner tube.

lVhat I claim as my invention is:

1. In an air gun, a magazine barrel and a shooting barrel formed from anintegral sheet metal blank, a liner tube for said shooting barrelapertured for communication with said magazine barrel and means foradjustably and removably securing said liner tube in position.

2. In an air gun, a combined magazine barrel and shooting barrel formedfrom a single sheet metal blank bent into a loop shaped cross section, aliner tube in one portion of said loop forming the shooting barrel andhaving an aperture in the side wall thereof, an apertured plug forthreadedly engaging the piston abutment of the gun and surrounding aprojecting end portion of said shooting barrel, said plug having aconical recess in its forward face against which the end of the magazinebarrel abuts and forming a deflector for directing the shot from saidmagazine barrel through the aperture in said liner tube into the same.

3. In an air gun, a combined shooting and magazine barrel comprising anintegral sheet metal blank bent into loop form and forming cylindricalsegments about spaced parallel axes, the portion surrounding one axisbeing extended beyond the end of the portion surrounding the other axis,an apertured plug surrounding said projecting portion, said plug havinga conical recess in its forward end and abutting against a bevelled endof the eccentric portion of said loop, a liner tube for the portionconcentric with said apertured plug having an aperture in the side wallthereof for communication with the magazine barrel, and a set screw insaid plug for engaging said liner tube to adjustably and detachably holdthe same in position.

4. In a gun, a combined magazine and shooting barrel formed of anintegral sheet metal blank bent into a loop cross section, a liner tubeinserted in one portion of said loop cross section to form the shootingbarrel, and a portion struck out from said loop at one point in thelength thereof for forming a feed aperture for shot into the saidmagazine barrel and a conical deflector for guiding said shot thereinto.

5. In an air gun, a combined magazine and shooting barrel formed of asingle sheet metal blank bent into loop form having cylindricalsegmental portions eccentric to parallel axes, said blank having astruck out portion at one point in its length forming a feed aperturefor receiving shot and a deflector for guiding the shot into the barrel,and a liner tube inserted to be concentric with one of said parallelaxes to constitute a shooting barrel, the space outside of said linertube and within said loop constituting the magazine barrel.

In testimony whereof I aliiX mv signature.

CHARLES F. LEFEVER.

